Machine for pointing bolts.



No. 67I,522. Patented Apr. 9, 190|. C. LANZ.

' MACHINE FOR HUNTING BOLTS,

(Application led July 24, 1900.)

(No Model'.) v 3 SheetsfSheet l.

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MACHINE FOR PINTING BULTS.

(Appuvmon med :my 24. 1900.)

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(No Model.)

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No. 67|,522. Patented Apr. 9, I90l. C. LANZ.

MACHINE FUR POINTING BDLTS.

(Application filed July 2'4, 1900.1

3 Sheets-Sheet 3.

(No Model.)

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UNITED STATES PATENT OFFICE.

CHARLES LANZ, OF PITTSBURG, PENNSYLVANIA.

MACHINE FOR POINTING BOLTS.

SPECIFICATION forming part of Letters Patent No. 671,522, dated April 9, 1901.

Application filed July 24, 1900.

To all whom it may concern:

Be it known that I, CHARLES LANZ, a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Machines for Pointing Bolts; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to metal-working machinos of that class in which a holder for either the tool or the work is moved longitudinally to bring the parts into working position and is rotated and fed forward to cut the material operated upon in the manner and to the eX: tent desired.

The object of my invention is to provide a machine of the character indicated which shall be automatic in its operation, except as regards the insertion and removal of the articles operated upon, and which shall have a yielding resilient feed in order that injuries to the cutting-tool may be avoided.

My invention is illustrated in the accompanying drawings as embodied in a machine for pointing bolts, and it will be described as adapted to such a machine, it being understood,however, that as regards its broader features it is not restricted to use in Aconnection with machines for working upon any one specific article of manufacture.

In the drawings, Figure 1 is a side elevation of a machine embodying my invention; and Fig. 2 is a plan view of the same, certain parts being broken away. Fig. 3 is a detail perspective View of a portion of the feeding mechanism. Fig. 4 is a View of the machine mainly in end elevation, but partially in section. Fig. 5 is a detail view of a portion ofthe feeding devices; and Fig. is a side elevation of the cam-and-lever mechanism for bringing the tool-holder to working position, certain portions being broken away. y

Referring now to the details of the construction as illustrated, the frame 1 of the machine is provided with brackets or standards 2 and 3, in which are mounted a driving-shaft4, having a driving-pinion5a tight pulley 6, and a loose pulley 7, connected bya belt (indicated by broken lines) to any suitable driv-` ing-engine or line of shafting. Beyond theW pulleys 6 and 7 theshaft 4 is provided with three pulleys 8, 9, and 10 of dierent sizes.

Serial No. 24,638. (No model.)

The number may, however, be more or less than three. The function of these three pulleys will be described hereinafter. The bearing brackets or standards 2 and 3 are provided with supports 11 for a belt-shifting rod 11a, this rod l1a being manipulated directly by hand or by suitable levers in order to shift the driving-belt from the fast to the loose puls ley, and vice versa.

Mounted in bearings in the brackets or standards 2 and 3 and preferably in a plane below that of the shaft 4 are two shafts l2. These shafts are duplicates and each is Somewhat longer than the distance between the outer faces of their bearings in order that they may be reciprocated longitudinally by means to be hereinafter described. The rear end of each shaft 12 is provided with a gearwheel 13, that meshes with the driving-pinion 5. h On the front end of each shaft 12 is mounted a holder 14. In the present instance this is shown as a tool-holder l5, but it obviously might be adapted for holding thearticle to be out, if desired.

Between the bearings 2 and 3 each shaft 12 is provided with a collar 16, shown as fastened in position on the shaft by means of two collars 17, having set-screws. Pivotally attached to the opposite sides ofthe collar 16 are the two arms 18 of a bifurcated lever 19, the other end of this lever being mounted upon a rod 20, the ends of which are supported in bearing-boxes 21, fastened to the lower side of the frame base-plate 22, the bearing being vertically elongated, so as to permit a limited up-and-down as well as rotary movement, which is necessary, as the upper ends of levers 19 move forward and back in a straight line the rod 20. Two curved levers 23 are mounted upon a rod or shaft 24, the ends of which are supported in suitable boxes 25,attached to the under side of the base-plate 22, adjacent to the boxes 21. The lower end of each lever 23 is curved rearwardly and provided with a bearing-surface 26 for engagement with a cam 27, these cams being rigidly mounted upon a shaft 28, having bearings on the frame l and extending at right angles to the shafts 4 and 12. This shaft 28 is also provided with a worm-wheel 29, with which meshes a worm 30, mounted on a shaft 31, having its bearings on the frame IOC . as shown, being provided with sockets or tation of shaft 3l may obviously be varied'.

Pivoted to each lever 19 is a rearwardly-extending horizontal rod 35, the outer end of which is screw-threaded and provided with a nut 36. A coiled spring 37 surrounds the rod 35, between the end of the frame 1 and the nut 36, the degree of compression of the spring being regulated by means of said nut in order that the desired force may be exerted to move wardly. Pivotally mounted on the lever 19 the upper end of the lever 23 is a U-shaped piece 38, having an endopening 39, through which projectsa rod 40, the front end of said rod having a head 4l, which is pivotally attached to the upper end of the lever 23. Each rod 40 is surrounded by a coiled spring 42, which is looselysupported in a tubular bearing 43, carried by one of the brackets 3, and is provided at its end with a nut 44 in order that the degree of compression of the spring may be varied. The inner end of the springbears against the U-shaped piece 38. The frame 1 is also provided with holders or rests of any articles to be operated upon, the holders 45,

seats 46 to receive the heads of bolts, one of which is indicated by broken lines in Fig. 1.

The operation of the machine is as follows: Power being applied to the shaft 4 through the pulley 6 and its belt, the rotation ot` the shaft will be imparted to the two shafts 12, and consequently to the tools 15, mounted in the holders 14. This rotary motion will also be imparted to the worm 31 and by the latter to the worm-wheel 29 and 'cams 27. The cams are reversely set, so that as the shaft 28 is rotated in the' direction indicated by the arrow they will act successively to the ends of thelevers 23 and move the shafts 12,by means of the springs 40 and levers 19, longitudinallyv forward to working position. The spring connection between the two levers 19 and 23 permits of. moving the holder 14 rearwardly in- `dependently of any 'movement of the lever 23,and consequently when the machine is in operation the tool 15 will be fed forward as it performs its work by the action of the spring 40.r This operation continues as long as thelever 23 is in engagement with its cam 27; but when the latter is rotated a sufficient distance to permit the end of the lever to fall ward position.

. desired.

the other cam-and-lever mechanism moves the corresponding tool forward. It will then be seen that the machine is substantially continuous and automatic in its operation, eX- cept that when the work to be done upon any article has been completed it must be removed by hand and replaced by another, or if the work is left to drop out by itself when the tool-holder is retracted it is merely necessary to feed another blank to the machine.

While l have shown a machine for operating upon two articles alternately and in the same manner, I desireit to be understood that the machine may be designed to operater on only one or upon more than two articles, if I desire it to be understood also that the details of construction may be varied within vconsiderable limits without departing from the spirit and scope of my invention. the lever 19, and with it the shaft 12, rear- What l claim as my invention, and desire to secure by Letters Patent, is in approximately the same horizontal plane as l l. The combination with a frame and a l holder mounted thereon, of gearing for rotat- 1 ing the holder and automatically-operating t means for moving the holder into and out of operative position at regular, predetermined intervals,said means embodying a spring that 1 is compressed as the holder is moved into operative position'and serves to feed the holder forward as the tool does its Work.

2. The combination with a frame and a holder mounted thereon, of gearing for rotating the holder, and automatically-operating means for advancing and retracting theholder at predetermined intervals, said means emsutable or desired form for either` tools or bodying two independently-pivoted levers and an interposed spring.

3. The combinationwith a frame and a holder mounted in bearings thereon, of means i for rotating said holder, cam-and-lever mechanism for intermittingly moving said holder to working position, said mechanism embodying a spring for holding the tool to its work.

4. The combination with a frame, and a v holder mounted in bearings thereon, of gearing for continuously rotating said holder,

-cam-and-lever mechanism for moving said holder longitudinally in its bearings to working position, said mechanism embodying a spring for yieldingly holding the tool to its work.

5. The combination with a frame and a tinuously rotating said holder, cam, lever x and spring mechanism for moving said holder to working position, worm-gearing `for continuously rotating the cam member of said f mechanism, and a spring for retracting the holder when released by the cam.

6. The combination with a frame and aholder mounted thereon, of gearing for roever and holder, an actuating-lever pivoted in the frame, a spring connection between one end of said lever and the first-named le- IOO IIO

oted in said frame, a bifurcated lever pivotally connected at its respective ends to the I5 frame and to the holder, a spring tending to hold said levers in juxtaposition, a spring for retracting said levers and means for rotating the holder and the cam.

In testimony whereof I, the said CHARLES zo LANZ, have hereunto set my hand.

CHARLES LANZ.

Witnesses:

ROBERT C. TOTTEN, G. C. RAYMOND. 

